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38 Commits

Author SHA1 Message Date
Evan Cheng 0d639a28aa Rename TargetSubtarget to TargetSubtargetInfo for consistency. 
llvm-svn: 134259
 2011-07-01 21:01:15 +00:00
Evan Cheng 8d71a75777 More refactoring. Move getRegClass from TargetOperandInfo to TargetInstrInfo. 
llvm-svn: 133944
 2011-06-27 21:26:13 +00:00
Jakob Stoklund Olesen 4f5f84c7e7 Teach antidependency breakers to use RegisterClassInfo. 
No functional change was intended.

llvm-svn: 133202
 2011-06-16 21:56:21 +00:00
Devang Patel f02a376fbc Update DBG_VALUEs while breaking anti dependencies. 
llvm-svn: 132487
 2011-06-02 21:26:52 +00:00
Chris Lattner 0ab5e2cded Fix a ton of comment typos found by codespell. Patch by 
Luis Felipe Strano Moraes!

llvm-svn: 129558
 2011-04-15 05:18:47 +00:00
Jakob Stoklund Olesen be1c8d3a82 Simplify AggressiveAntiDepBreaker's use of register aliases. 
llvm-svn: 121805
 2010-12-14 23:23:15 +00:00
Jim Grosbach 944aece38a Anti-dependency breaking needs to be careful not to use reserved regs 
llvm-svn: 112832
 2010-09-02 17:12:55 +00:00
Bill Wendling 51a9c0a1b3 Use std::vector instead of TargetRegisterInfo::FirstVirtualRegister. This time 
make sure to allocate enough space in the std::vector.

llvm-svn: 108449
 2010-07-15 19:58:14 +00:00
Bill Wendling 5a8d15c553 Reserve a goodly amount of room for the vectors. 
llvm-svn: 108448
 2010-07-15 19:41:20 +00:00
Bill Wendling 030b0286ec Use std::vector instead of TargetRegisterInfo::FirstVirtualRegister. 
llvm-svn: 108440
 2010-07-15 18:43:09 +00:00
Chris Lattner c48adb60ca revert bill's patches in an attempt to fix the buildbot. 
llvm-svn: 108419
 2010-07-15 06:51:46 +00:00
Bill Wendling 1f7071a3e4 Fix headers. 
llvm-svn: 108413
 2010-07-15 06:05:18 +00:00
Bill Wendling e7e6ca5c57 Use std::vector instead of a hard-coded array. The length of that array could 
get *very* large, but we only need it to be the size of the number of pregs.

llvm-svn: 108412
 2010-07-15 06:04:38 +00:00
Rafael Espindola 871c724773 Convert the last use of getPhysicalRegisterRegClass and remove it. 
AggressiveAntiDepBreaker should not be using getPhysicalRegisterRegClass. An
instruction might be using a register that can only be replaced with one from
a subclass of getPhysicalRegisterRegClass.

With this patch we use getMinimalPhysRegClass. This is correct, but
conservative. We should check the uses of the register and select the
largest register class that can be used in all of them.

llvm-svn: 108122
 2010-07-12 02:55:34 +00:00
Evan Cheng f128bdcb55 Make post-ra scheduling, anti-dep breaking, and register scavenger (conservatively) aware of predicated instructions. This enables ARM to move if-conversion before post-ra scheduler. 
llvm-svn: 106091
 2010-06-16 07:35:02 +00:00
Jim Grosbach 848548300d Not all entries in the range will have an SUnit. Check for that when looking 
for debug information.

llvm-svn: 105324
 2010-06-02 15:29:36 +00:00
Jim Grosbach 12ac8f0352 Update debug information when breaking anti-dependencies. rdar://7759363 
llvm-svn: 105300
 2010-06-01 23:48:44 +00:00
Dan Gohman 35bc4d46cb Make BreakAntiDependencies' SUnits argument const, and make the Begin 
and End arguments by-value rather than by-reference.

llvm-svn: 101830
 2010-04-19 23:11:58 +00:00
Bob Wilson 67dd3a4464 Tidy whitespace. 
llvm-svn: 100904
 2010-04-09 21:38:26 +00:00
Chris Lattner b06015aa69 move target-independent opcodes out of TargetInstrInfo 
into TargetOpcodes.h.  #include the new TargetOpcodes.h
into MachineInstr.  Add new inline accessors (like isPHI())
to MachineInstr, and start using them throughout the 
codebase.

llvm-svn: 95687
 2010-02-09 19:54:29 +00:00
Jim Grosbach eb431da074 80 column and whitespace cleanup 
llvm-svn: 92837
 2010-01-06 16:48:02 +00:00
David Greene 75a2efb06d Change errs() to dbgs(). 
llvm-svn: 92093
 2009-12-24 00:14:25 +00:00
David Goodwin a45fe67667 <rdar://problem/7453528>. Track only physical registers that are valid for the target. 
llvm-svn: 90970
 2009-12-09 17:18:22 +00:00
David Goodwin 3f3a8b1c7e <rdar://problem/6721894>. Allow multiple registers to be renamed together (super and sub) if necessary to break an anti-dependence. 
llvm-svn: 89722
 2009-11-24 00:59:08 +00:00
David Goodwin 5305dc0be1 Restructure code to allow renaming of multiple-register groups for anti-dep breaking. 
llvm-svn: 89511
 2009-11-20 23:33:54 +00:00
David Goodwin 80a03cc0b1 Remove some old experimental code that is no longer needed. Remove additional, speculative scheduling pass as its cost did not translate into significant performance improvement. Minor tweaks. 
llvm-svn: 89471
 2009-11-20 19:32:48 +00:00
David Goodwin dd1c6198d4 Fix a couple of problems with maintaining liveness information for antidep breaking. 
llvm-svn: 89404
 2009-11-19 23:12:37 +00:00
David Goodwin b9fe5d5d02 Allow target to specify regclass for which antideps will only be broken along the critical path. 
llvm-svn: 88682
 2009-11-13 19:52:48 +00:00
David Goodwin da83f7d58b Rename registers to break output dependencies in addition to anti-dependencies. 
llvm-svn: 87015
 2009-11-12 19:08:21 +00:00
David Goodwin cf89db135e Allow targets to specify register classes whose member registers should not be renamed to break anti-dependencies. 
llvm-svn: 86628
 2009-11-10 00:15:47 +00:00
David Goodwin bed7cb6c1d Fix bug in aggressive antidep breaking; liveness was not updated correctly for regions that do not have antidep candidates. 
llvm-svn: 86172
 2009-11-05 21:06:09 +00:00
David Goodwin 542649463b Replace std::map.at() with std::map[]. 
llvm-svn: 86102
 2009-11-05 01:45:50 +00:00
David Goodwin 7d8878add2 Break anti-dependencies using free registers in a round-robin manner to avoid introducing new anti-dependencies. 
llvm-svn: 86098
 2009-11-05 01:19:35 +00:00
David Goodwin 8501dbbe10 Do a scheduling pass ignoring anti-dependencies to identify candidate registers that should be renamed. 
llvm-svn: 85939
 2009-11-03 20:57:50 +00:00
David Goodwin faa7660fd0 Between scheduling regions, correctly maintain anti-dep breaking state so that we don't incorrectly rename registers that span these regions. 
llvm-svn: 85537
 2009-10-29 23:30:59 +00:00
David Goodwin 9f1b2d4619 Fix a couple of bugs in aggressive anti-dep breaking. 
llvm-svn: 85522
 2009-10-29 19:17:04 +00:00
David Goodwin e056d1077e Allow the aggressive anti-dep breaker to process the same region multiple times. This is necessary because new anti-dependencies are exposed when "current" ones are broken. 
llvm-svn: 85166
 2009-10-26 22:31:16 +00:00
David Goodwin de11f36ab7 Add aggressive anti-dependence breaker. Currently it is not the default for any target. Enable with -break-anti-dependencies=all. 
llvm-svn: 85145
 2009-10-26 19:32:42 +00:00